MAKING MODERN LIVING POSSIBLE
Technical Information
Orbital Motors
OML and OMM
powersolutions.danfoss.com
Technical Information
OML and OMM Orbital Motors
Revision History
Table of Revisions
2
Date
Changed
Rev
Feb 2014
Converted to Danfoss layout - DITA CMS
BA
Nov 2012
Planetary Gears deleted
AI
Oct 2011
Dimensions added to drawing
AH
May 2011
Typos
AG
Sep 2010
New back page
AF
Mar 2010
Japan location
AE
Jul 2008
Text
AC
Apr 2008
Pictures, drawings and text
AB
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
Contents
A wide range of Orbital Motors
Characteristic, features and application areas of Orbital Motors....................................................................................5
Characteristic features of Danfoss Orbital Motors.......................................................................................................... 5
Technical features of Danfoss Orbital Motor.....................................................................................................................5
The Danfoss Orbital Motors are used in the following application areas:..............................................................6
Survey of literature with technical data on Danfoss Orbital Motors..............................................................................6
Speed, torque and output
Speed, torque and output.............................................................................................................................................................7
OML
Versions
Technical data
Shaft seal
Oil flow
Shaft load
Function diagrams
Shaft
Port
OML versions......................................................................................................................................................................................9
Code numbers................................................................................................................................................................................... 9
Ordering......................................................................................................................................................................................... 9
Technical data for OML with 16 mm and 5/8 in cylindrical shaft................................................................................. 10
Max. permissible shaft seal pressure.......................................................................................................................................11
Direction of shaft rotation...........................................................................................................................................................12
Permissible shaft loads for OML............................................................................................................................................... 13
Function diagrams.........................................................................................................................................................................14
OML 8 function diagram........................................................................................................................................................ 14
OML 12.5 function diagram.................................................................................................................................................. 15
OML 20 function diagram......................................................................................................................................................15
OML 32 function diagram......................................................................................................................................................16
Shaft version.................................................................................................................................................................................... 17
Port thread versions......................................................................................................................................................................18
Dimensions, OML end port, European version
OML end port, European version............................................................................................................................................. 19
Weight and dimensions......................................................................................................................................................... 19
Dimensions, OML end port, US version
OML end port, US version........................................................................................................................................................... 21
Weight and dimensions......................................................................................................................................................... 21
OMM
Versions
Technical data
Shaft seal
Oil flow
OMM versions..................................................................................................................................................................................24
Code numbers.................................................................................................................................................................................24
Ordering.......................................................................................................................................................................................24
Technical data for OMM with 16 mm and 5/8 in cylindrical shaft................................................................................25
Max. permissible shaft seal pressure.......................................................................................................................................26
Direction of shaft rotation...........................................................................................................................................................27
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Technical Information
OML and OMM Orbital Motors
Contents
Shaft load
Function diagrams
Shaft
Port
Permissible shaft loads for OMM..............................................................................................................................................28
Function diagrams.........................................................................................................................................................................29
OMM 8 function diagram.......................................................................................................................................................29
OMM 12.5 function diagram.................................................................................................................................................29
OMM 20 function diagram.................................................................................................................................................... 30
OMM 32 function diagram.................................................................................................................................................... 30
OMM 50 function diagram.................................................................................................................................................... 31
Shaft version.................................................................................................................................................................................... 32
Port thread versions......................................................................................................................................................................33
Dimensions, OMM end port, European version
OMM end port, European version............................................................................................................................................34
Weight and dimensions......................................................................................................................................................... 35
Dimensions, OMM end port, US version
OMM end port, US version..........................................................................................................................................................36
Weight and dimensions......................................................................................................................................................... 37
Dimensions, OMM side port, European version
OMM side port, European version........................................................................................................................................... 38
Weight and dimensions......................................................................................................................................................... 39
Dimensions, OMM side port, US version
OMM side port, US version......................................................................................................................................................... 40
Weight and dimensions......................................................................................................................................................... 41
Accessories
Hydraulic systems
4
2 bolt flange kit, code no. 151G0211...................................................................................................................................... 42
Installation of the Danfoss Orbital Motors............................................................................................................................43
About the design...................................................................................................................................................................... 43
About the assembly.................................................................................................................................................................43
Starting up and running in the hydraulic system...............................................................................................................43
Operation..........................................................................................................................................................................................43
Maintenance.................................................................................................................................................................................... 44
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
A wide range of Orbital Motors
Characteristic, features and application areas of Orbital Motors
Danfoss is a world leader within production of low speed orbital motors with high torque. We can offer
more than 3000 different orbital motors, categorised in types, variants and sizes (incl. different shaft
versions).
The motors vary in size (rated displacement) from 8 cm³ [0.50 in³] to 800 cm³ [48.9 in³] per revolution.
Speeds range up to approx. 2500 min-1 (rpm) for the smallest type and up to approx. 600 min-1 (rpm) for
the largest type.
Maximum operating torques vary from 13 N•m [115 lbf•in] to 2700 N•m [24.000 lbf•in] (peak) and
maximum outputs are from 2.0 kW [2.7 hp] to 70 kW [95 hp].
Characteristic features of Danfoss Orbital Motors
•
•
•
•
•
•
•
•
•
•
Smooth running over the entire speed range
Constant operating torque over a wide speed range
High starting torque
High return pressure without the use of drain line (High pressure shaft seal)
High efficiency
Long life under extreme operating conditions
Robust and compact design
High radial and axial bearing capacity
For applications in both open and closed loop hydraulic systems
Suitable for a wide variety of hydraulics fluids
Technical features of Danfoss Orbital Motor
The programme is characterised by technical features appealing to a large number of applications and a
part of the programme is characterised by motors that can be adapted to a given application. Adaptions
comprise the following variants among others:
520L0346 • Rev BA • Feb 2014
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Technical Information
OML and OMM Orbital Motors
A wide range of Orbital Motors
•
•
•
•
•
•
•
•
•
•
•
•
•
Motors with corrosion resistant parts
Wheel motors with recessed mounting flange
OMP, OMR- motors with needle bearing
OMR motor in low leakage version
OMR motors in a super low leakage version
Short motors without bearings
Ultra short motors
Motors with integrated positive holding brake
Motors with integrated negative holding brake
Motors with integrated flushing valve
Motors with speed sensor
Motors with tacho connection
All motors are available with black finish paint
The Danfoss Orbital Motors are used in the following application areas:
•
•
•
•
•
•
•
•
Construction equipment
Agricultural equipment
Material handling & Lifting equipment
Forestry equipment
Lawn and turf equipment
Special purpose
Machine tools and stationary equipment
Marine equipment
Survey of literature with technical data on Danfoss Orbital Motors
Detailed data on all Danfoss Orbital Motors can be found in our motor catalogue, which is divided into
more individual subcatalogues:
•
•
•
•
•
•
•
•
•
•
General information on Danfoss Orbital Motors: function, use, selection of orbital motor, hydraulic
systems, etc.
Technical data on small motors: OML and OMM
Technical data on medium sized motors: OMP, OMR, OMH
Technical data on medium sized motors: DH and DS
Technical data on medium sized motors: OMEW
Technical data on medium sized motors: VMP
Technical data on medium sized motors: VMR
Technical data on large motors: OMS, OMT and OMV
Technical data on large motors: TMT
Technical data on large motors: TMV
A general survey brochure on Danfoss Orbital Motors gives a quick motor reference based on power,
torque, speed and capabilities.
6
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
Speed, torque and output
Speed, torque and output
The following bar diagrams, are useful for a quick selection of relevant motor size for the application. The
final motor size can be determined by using the function diagram for each motor size.
•
•
OML can be found under function diagrams.
OMM can be found under function diagrams.
The function diagrams are based on actual tests on a representative number of motors from our
production. The diagrams apply to a return pressure between 5 and 10 bar [75 and 150 psi] when using
mineral based hydraulic oil with a viscosity of 35 mm²/s [165 SUS] and a temperature of 50°C [120°F]. For
further explanation concerning how to read and use the function diagrams, please consult the paragraph
"Selection of motor size" in the technical information "General" DKMH.PK.100.G2.02 520L0232.
P301 016
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7
Technical Information
OML and OMM Orbital Motors
OML
8
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
Versions
OML versions
Mounting Shaft
Front‚
4 × M5
Port size
Cyl. 16 mm G 1/4
Front‚ 4 × Cyl. 5/8 in
10-32 UNF
European
version
US
Side port
version version
X
7/16 - 20 UNF
X
End port
version
Standard
shaft seal
Drain
Check
connection valve
Main type
designation
Config.
code
X
X
No
Yes
OML
1
X
X
No
Yes
OML
2
Features available (options) :
Painted
Code numbers
Config. code
Code number - displacement (cm³)
8
12.5
20
32
1
2001
2002
2003
2004
2
2021
2022
2023
2024
Ordering
Add the four digit prefix “151G” to the four digit numbers from the chart for complete code number.
Example:
151G2001 for an OML 8 with front mounting (4 × M5), cyl. 16 mm shaft and port size G 1/4.
Orders will not be accepted without the four digit prefix.
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Technical Information
OML and OMM Orbital Motors
Technical data
Technical data for OML with 16 mm and 5/8 in cylindrical shaft
Type
OML
OML
OML
OML
8
12.5
20
32
8.0
[0.49]
12.5
[0.77]
20.0
[1.22]
32.0
[1.96]
cont.
2000
1280
800
500
int.1)
2500
1600
1000
625
cont.
7
[60]
11
[100]
18
[160]
29
[260]
int.1)
13
[120]
20
[180]
32
[280]
51
[450]
cont.
1.1
[1.5]
1.1
[1.5]
1.1
[1.5]
1.1
[1.5]
int.1)
2.0
[2.7]
2.0
[2.7]
2.0
[2.7]
2.0
[2.7]
cont.
70
[1020]
70
[1020]
70
[1020]
70 (55)3
[1020] [800]3
int.1)
125
[1810]
125
[1810]
125 (85)3
[1810] [800]3
125 (55)3
[1810] [800]3
peak2)
140
[2030]
140
[2030]
125 (85)3
[2030] [1230]3
140 (55)3
[2030] [800]3
cont.
16
[4.2]
16
[4.2]
16
[4.2]
16
[4.2]
int.1)
20
[5.3]
20
[5.3]
20
[5.3]
20
[5.3]
Motor Size
Geometric displacement
cm³
[in³]
Max. speed
min-1
[rpm]
Max. torque
Max. output
Max. pressure drop
Max. oil flow
Nm
[lbf•in]
kW
[hp]
bar
[psi]
l/min
[US gal/min]
Max. starting pressure with
unloaded shaft
bar
[psi]
4
[60]
4
[60]
4
[60]
6
[90]
Min. starting torque
at max. press. drop cont.
Nm [lbf•in]
5
[45]
9
[80]
15
[135]
24
[210]
at max. press. drop int.1)
Nm [lbf•in]
10
[90]
16
[140]
27
[240]
42
[370]
min-1
[rpm]
50
50
50
50
Min. speed4)
Type
OML 8 - 32
Max. inlet pressure
bar [psi]
cont.
125 [1810]
int.1)
140 [2030]
peak2)
140 [2030]
1) Intermittent operation: the permissible values may occur for max. 10% of every minute.
2) Peak load: the permissible values may occur for max. 1% of every minute.
3) Max. pressure drop in applications with a large moment of inertia and frequent stops or reversings.
4) Operation at lower speed may be slightly less smooth.
10
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
Shaft seal
Max. permissible shaft seal pressure
OML has incorporated check valves
which ensure that the pressure on theshaft seal
never exceeds the pressure in the returnline.
Max. return pressure (max. pressure on shaft seal)
Pressure Drop in Motor
The curve applies to an unloaded motor shaft and an oil viscosity of 35 mm²/s [165 SUS]
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Technical Information
OML and OMM Orbital Motors
Oil flow
Direction of shaft rotation
12
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Technical Information
OML and OMM Orbital Motors
Shaft load
Permissible shaft loads for OML
The permissible radial shaft load (Prad.) is calculated from the distance (I) between the point of load and
the mounting surface:
The drawing shows the permissible radial load when I = 15 mm [0.59 in].
The calculated shaft load should never exceed the permissible value.
P rad. =1060 N
[238 lbf ]
Pax. =800 N
[180 lbf ]
15[.59]
520L0346 • Rev BA • Feb 2014
151-1314.10
13
Technical Information
OML and OMM Orbital Motors
Function diagrams
Function diagrams
Explanation of function diagram use, basis and conditions can be found under Speed, torque and output.
•
•
A: Continuous range
B: Intermittent range (max. 10% operation every minute)
Max. permissible continuous/intermittent pressure drop for the actual shaft version can be found under
Technical data.
Intermittent pressure drop and oil flow must not occur simultaneously.
OML 8 function diagram
14
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
Function diagrams
OML 12.5 function diagram
OML 20 function diagram
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15
Technical Information
OML and OMM Orbital Motors
Function diagrams
OML 32 function diagram
16
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Technical Information
OML and OMM Orbital Motors
Shaft
Shaft version
29 [1.14]
28 [1.10]
A5 × 5 × 16
A
A-A
DIN 6885
18 [0.71]
17.87 [0.704]
C: Parallel key
45˚
A
M6
16 mm
ø17 [0.67]
R0.5 [0.020]
ø16.006 [0.630]
ø15.995 [0.630]
A: Cylindrical shaft
A
5 [0.20]
4.97 [0.196]
5 [0.20]
14 [0.55]
16.5 [0.650]
16.2 [0.638]
C
4.5 [0.177]
3.5 [0.138]
P301 709
29 [1.14]
28 [1.10]
R0.5 [0.020]
5/8”
A
B
1
4 28UNF-2B
ø7 [0.28]
B.S. 46
ø17 [0.67]
D: Parallel key
3/16 × 3/16 × 3/4 in
1[0.04]x45˚
A
5 [0.20]
14 [0.55]
19.35[0.762]
19.05[0.750]
A-A
17.90 [0.705]
17.77 [0.700]
B: Cylindrical shaft
ø15.875 [0.625]
ø15.850 [0.624]
US version
4.80 [0.190]
4.77 [0.188]
D
4.5 [0.177]
3.5 [0.138]
P301 710
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Technical Information
OML and OMM Orbital Motors
Port
B
max.ø21.5 [0.846]
max.ø21.5 [0.846]
D
P301 707
P301 708
A: G main ports
B: UNF main ports
C: ISO 228/1 - G1/4
D: 7/16 - 20 UNF
O-ring boss port
18
min.12 [0.47]
C
max.1.0 [0.04]
A
min.12 [0.47]
max.1.0 [0.04]
Port thread versions
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
Dimensions, OML end port, European version
11.5 [0.453]
11.3 [0.445]
11.5 [0.453]
11.3 [0.445]
OML end port, European version
ø21 [0.83]
D
3.8 [0.150]
3.6 [0.138]
L1
L
5[0.20]
max.32.2
[1.268]
ø45.05 [1.774]
ø44.95 [1.760]
0.8[0.031]
0.5[0.020]
max. ø45.1 [1.776]
ø36 [1.42]
C
45˚
151-1315.10
C: M5; 15 mm [0.59 in] deep
D: G 1/4; 12 mm [0.47 in]
Weight and dimensions
Type
L max.
Length
L1 mm [in]
Weight
kg [lb]
OML 8
102.5 [4.04]
4.1 [0.16]
1.0 [2.2]
OML 12.5
104.8 [4.13]
6.4 [0.25]
1.0 [2.2]
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19
Technical Information
OML and OMM Orbital Motors
Dimensions, OML end port, European version
Type
L max.
20
Length
L1 mm [in]
Weight
kg [lb]
OML 20
108.6 [4.28]
10.2 [0.40]
1.1 [2.4]
OML 32
114.7 [4.53]
16.3 [0.64]
1.2 [2.6]
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
Dimensions, OML end port, US version
11.5 [0.453]
11.3 [0.445]
11.5 [0.453]
11.3 [0.445]
OML end port, US version
ø21 [0.83]
D
3.8 [0.150]
3.6 [0.138]
max. ø45.1 [1.776]
C
ø36 [1.42]
0.8 [0.031]
0.5 [0.020]
L1
L
5 [0.20]
max.32.2
[1.268]
ø45.05 [1.774]
ø44.95 [1.760]
45˚
151-1315.10.22
C: 10 - 32 UNF; 15 mm [0.59 in] deep
D: 7⁄16 - UNF; 12 mm [0.47 in] deep
Weight and dimensions
Type
L max.
Length
L1 mm [in]
Weight
kg [lb]
OML 8
102.5 [4.04]
4.1 [0.16]
1.0 [2.2]
OML 12.5
104.8 [4.13]
6.4 [0.25]
1.0 [2.2]
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21
Technical Information
OML and OMM Orbital Motors
Dimensions, OML end port, US version
Type
L max.
22
Length
L1 mm [in]
Weight
kg [lb]
OML 20
108.6 [4.28]
10.2 [0.40]
1.1 [2.4]
OML 32
114.7 [4.53]
16.3 [0.64]
1.2 [2.6]
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
OMM
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23
Technical Information
OML and OMM Orbital Motors
Versions
OMM versions
Mounting Shaft
Port size
European
version
Front;
3 × M6
Cyl. 16 mm G 3/8
X
G 3/8
X
Front;
3 × 1/4 28 UNF
Cyl. 5/8 in
Front;
3 × M6
Splined
B17×14
US
version
X
9/16-18 UNF
X
X
G 3/8
X
End port
version
Standard
shaft seal
Drain
Check
connection valve
Main type
designation
Config.
code
X
X
Yes
Yes
OMM
1
X
Yes
Yes
OMM
2
X
Yes
Yes
OMM
3
X
Yes
Yes
OMM
4
X
Yes
Yes
OMM
5
X
Yes
Yes
OMM
6
X
9/16-18 UNF
G 3/8
Side port
version
X
X
X
X
Features available (options) :
Speed sensor
Reverse rotation
Corrosion protected
Painted
2 bolt flange kit (Code no 151G0211)
Code numbers
Config. code
Code numbers, displacement (cm³)
8
12.5
20
32
40
50
1
0040
0001
0002
0003
0277
0037
2
0041
0004
0005
0006
0279
0013
3
0048
0031
0032
0033
-
5032
4
0049
0034
0035
0036
-
0094
5
0046
0024
0025
0026
-
-
6
0047
0027
0028
0029
0294
-
Ordering
Add the four digit prefix “151G” to the four digit numbers from the chart for complete code number.
Example:
151G0035 for an OMM 20 with front mounting (3 × 1/4 - 28 UNF), cyl. 5/8 in shaft and port size 9/16 - 18
UNF.
Orders will not be accepted without the four digit prefix.
24
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Technical Information
OML and OMM Orbital Motors
Technical data
Technical data for OMM with 16 mm and 5/8 in cylindrical shaft
Type
Motor size
OMM
OMM
OMM
OMM
OMM
OMM
8
12.5
20
32
40
50
8.2
[0.50]
12.5
[0.77]
19.9
[1.22]
31.6
[1.93]
39.8
[2.43]
50
[3.08]
Geometric displacement
cm³
[in³]
Max. speed
min-1
cont.
1950
1550
1000
630
500
400
[rpm]
int.1)
2450
1940
1250
800
630
500
Nm
[lbf•in]
cont.
11
[95]
16
[140]
25
[220]
40
[350]
45
[400]
46
[410]
int.1)
15
[135]
23
[200]
35
[310]
57
[500]
70
[620]
88
[780]
cont.
1.8
[2.4]
2.4
[3.2]
2.4
[3.2]
2.4
[3.2]
2.2
[3.0]
1.8
[2.4]
int.1)
2.6
[3.5]
3.2
[4.3]
3.2
[4.3]
3.2
[4.3]
3.2
[4.3]
3.2
[4.3]
cont.
100
[1450]
100
[1450]
100
[1450]
100
[1450]
90
[1310]
70
[1020]
int.1)
140
[2030]
140
[2030]
140
[2030]
140
[2030]
140
[2030]
140
[2030]
peak2)
200
[2900]
200
[2900]
200
[2900]
160
[2320]
160
[2320]
160
[2320]
cont.
16
[4.2]
20
[5.3]
20
[5.3]
20
[5.3]
20
[5.3]
20
[5.3]
int.1)
20
[5.3]
25
[6.6]
25
[6.6]
25
[6.6]
25
[6.6]
25
[6.6]
Max. torque
Max. output
Max. pressure drop
Max. oil flow
kW
[hp]
bar
[psi]
l/min
[US gal/min]
Max. starting pressure with
unloaded shaft
bar
[psi]
4
[60]
4
[60]
4
[60]
4
[60]
4
[60]
4
[60]
Min. starting torque
at max. press. drop cont.
Nm [lbf•in]
7
[60]
12
[105]
21
[185]
34
[300]
38
[335]
41
[365]
at max. press. drop int.1)
Nm [lbf•in]
10
[90]
17
[150]
29
[255]
48
[425]
62
[550]
79
[700]
min-1
[rpm]
50
40
30
30
30
30
Min. speed3)
Type
OMM 8 - 50
Max. inlet pressure
bar
[psi]
cont.
140 [2030]
int.1)
175 [2538]
peak2)
225 [3260]
1) Intermittent operation: the permissible values may occur for max. 10% of every minute.
2) Peak load: the permissible values may occur for max. 1% of every minute.
3) Operation by lower speeds may be slightly less smooth.
520L0346 • Rev BA • Feb 2014
25
Technical Information
OML and OMM Orbital Motors
Shaft seal
Max. permissible shaft seal pressure
OMM with check valves and without use of drain
connection:
OMM with check valves and drain connection:
The pressure on the shaft seal never exceeds the
pressure in the return line.
The shaft seal pressure equals the pressure on the
drain line.
151-320.10
Max. return pressure without drain line or max. pressure in drain line
Pressure drop in motor
The curve applies to an unloaded motor shaft and an oil viscosity of 35 mm²/s [165 SUS]
26
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
Oil flow
Direction of shaft rotation
B
A
B
A
P301 008
520L0346 • Rev BA • Feb 2014
27
Technical Information
OML and OMM Orbital Motors
Shaft load
Permissible shaft loads for OMM
The permissible radial shaft load (Prad.) is calculated from the distance (I) between the point of load and
the mounting surface:
The drawing shows the permissible radial load when I = 20 mm [0.79 in].
The calculated shaft load should never exceed the permissible value.
Prad. = 1600 N
[360 lbf ]
Pax. = 800 N
[180 lbf ]
20 [0.79]
151-980.11
28
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Technical Information
OML and OMM Orbital Motors
Function diagrams
Function diagrams
Explanation of function diagram use, basis and conditions can be found under Speed, torque and output.
•
•
LIght grey: Continuous range
Light red: Intermittent range (max. 10% operation every minute)
Max. permissible continuous/intermittent pressure drop for the actual shaft version can be found under
Technical data.
Intermittent pressure drop and oil flow must not occur simultaneously.
OMM 8 function diagram
OMM 12.5 function diagram
520L0346 • Rev BA • Feb 2014
29
Technical Information
OML and OMM Orbital Motors
Function diagrams
OMM 20 function diagram
OMM 32 function diagram
30
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
Function diagrams
OMM 50 function diagram
80
600
500
D
70
2kW
N=3hp
40
0.5kW
30
N=
N=
0.25 hp 0.25kW
20
70 bar
1020 psi
1hp
n t =75%
0.5hp
70%
100
10
0
0
50 bar
730 psi
D
65%
60%
n t =50%
0
50
100
150
200
p=140 ba
r
2030 psi
125 bar
1810 psi
100 bar
1450 psi
2hp
1kW
400
200
N=3kW
60
50
300
Q=25 l/min
6.6 US gal/min
700
20 l/min
5.3 US gal/min
90
15 l/min
4.0 US gal/min
800
OMM 50
10 l/min
2.6 US gal/min
Nm
Q=3 l/min
0.8 US gal/min
5 l/min
1.3 US gal/min
lbf•in
250
300
350
400
450
500
p= 30 bar
440 psi
min -1
(rpm)
151-1660.11
520L0346 • Rev BA • Feb 2014
31
Technical Information
OML and OMM Orbital Motors
Shaft
Shaft version
29 [1.14]
28 [1.10]
A
DIN 6885
A-A
18 [0.71]
17.87 [0.704]
A5 • 5 • 16
ø17 [0.67]
D: Parallel key
45˚
A
ø16.006 [0.630]
ø15.995 [0.630]
R0.5 [0.020]
M6
A: Cylindrical shaft 16 mm [0.63
in]
A
5 [0.20]
4.97 [0.196]
5 [0.20]
14 [0.55]
16.5 [0.650]
16.2 [0.638]
D
4.5 [0.177]
3.5 [0.138]
P301 704
29 [1.14]
28 [1.10]
R0.5(.020)
5/8 in
1
28UNF-2B
4
A
ø7 [0.28]
B
B.S. 46
ø17 [0.67]
E: Parallel key
3/16 • 3/16 • 3/4 in
1[0.04)x45˚
A
5 [0.20]
14 [0.55]
19.35 [0.762]
19.05 [0.750]
A-A
17.90 [0.705]
17.77 [0.700]
B: Cylindrical shaft
ø15.875 [0.625]
ø15.850 [0.624]
US version
4.80 [0.190]
4.77 [0.188]
E
4.5 [0.177]
3.5 [0.138]
P301 705
29 [1.14]
28 [1.10]
C: Involute splined shaft
R0.5 [0.020]
B17 • 14, DIN 5482
M6
C
A
ø16.5 [0.650]
ø16.39 [0.645]
DIN 5482
A-A
A
ø17 [0.67]
Measurement 19.641 ± 0.04 mm
over 3 mm pins deviates from
45˚
5 [0.20]
14 [0.55]
16 [0.63]
14 [0.55]
P301 706
32
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
Port
ø25.4 [1.000]
ø25 [0.98]
ø25.4 [1.000]
ø25 [0.98]
E
F
P301 700
min. 12.7 [0.500]
B
1.0 [0.039]
0.5 [0.020]
A
min. 12 [0.47]
1.0 [0.039]
0.5 [0.020]
Port thread versions
P301 701
A: G main ports
B: UNF main ports
E: ISO 228/1 - G3/8
F: 9/16 - 18 UNF O-ring boss port
D
C
H
P301 702
min.10 [0.39]
ø19.4 [0.764]
ø19 [0.75]
1.0 [0.039]
0.5 [0.020]
G
min.8 [0.31]
1.0 [0.039]
0.5 [0.020]
ø15.4 [0.606]
ø15 [0.59]
P301 703
C: G drain ports
D: UNF drain ports
G: ISO 228/1 - G1/8
H: 3/8 - 24 UNF O-ring port
520L0346 • Rev BA • Feb 2014
33
Technical Information
OML and OMM Orbital Motors
Dimensions, OMM end port, European version
OMM end port, European version
P301 008
C: M6; 10 mm [0.39 in] deep
D: G 3⁄8; 12 mm [0.47 in] deep
E: Drain connection G 1⁄8; 8 mm [0.39 in] deep
34
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
Dimensions, OMM end port, European version
Weight and dimensions
Type
Length
L max. L1 mm [in]
Weight
kg [lb]
OMM 8
104.0 [4.09]
3.5 [0.14]
1.9 [4.2]
OMM 12.5
106.0 [4.17]
5.5 [0.22]
2.0 [4.4]
OMM 20
109.0 [4.29]
8.5 [0.33]
2.1 [4.6]
OMM 32
114.0 [4.49]
13.5 [0.53]
2.2 [4.8]
OMM 40
118.0 [4.65]
17.0 [0.67]
2.3 [5.1]
OMM 50
122.0 [4.80]
21.5 [0.85]
2.4 [5.3]
520L0346 • Rev BA • Feb 2014
35
Technical Information
OML and OMM Orbital Motors
Dimensions, OMM end port, US version
OMM end port, US version
P301 008
C: 1/ 4 - 28 UNF - 2B; min. 10 mm [0.39 in] deep
D: 9⁄16 - 18 UNF; 12 mm [0.47 in] deep O-ring boss port
E: 3⁄8 - 24 UNF; 8 mm [0.39 in] deep O-ring port
36
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
Dimensions, OMM end port, US version
Weight and dimensions
Type
Length
L max. L1 mm [in]
Weight
kg [lb]
OMM 8
104.0 [4.09]
3.5 [0.14]
1.9 [4.2]
OMM 12.5
106.0 [4.17]
5.5 [0.22]
2.0 [4.4]
OMM 20
109.0 [4.29]
8.5 [0.33]
2.1 [4.6]
OMM 32
114.0 [4.49]
13.5 [0.53]
2.2 [4.8]
OMM 50
122.0 [4.80]
21.5 [0.85]
2.4 [5.3]
520L0346 • Rev BA • Feb 2014
37
Technical Information
OML and OMM Orbital Motors
Dimensions, OMM side port, European version
OMM side port, European version
max 61.5 (2.421)
C: M6; 10 mm [0.39 in] deep
D: G 3⁄8; 12 mm [0.47 in] deep
E: Drain connection G 1⁄8; 8 mm [0.39 in] deep
38
520L0346 • Rev BA • Feb 2014
P301 010
Technical Information
OML and OMM Orbital Motors
Dimensions, OMM side port, European version
Weight and dimensions
Type
L max.
Length
L1 mm [in]
Weight
kg [lb]
OMM 8
104.0 [4.09]
3.5 [0.14]
1.9 [4.2]
OMM 12.5
106.0 [4.17]
5.5 [0.22]
2.0 [4.4]
OMM 20
109.0 [4.29]
8.5 [0.33]
2.1 [4.6]
OMM 32
114.0 [4.49]
13.5 [0.53]
2.2 [4.8]
OMM 40
118.0 [4.65]
17.0 [0.67]
2.3 [5.1]
OMM 50
122.0 [4.80]
21.5 [0.85]
2.4 [5.3]
520L0346 • Rev BA • Feb 2014
39
Technical Information
OML and OMM Orbital Motors
Dimensions, OMM side port, US version
OMM side port, US version
max 61.5 (2.421)
C: 1/ 4 - 28 UNF - 2B; min. 10 mm [0.39 in] deep
D: 9⁄16 - 18 UNF ; 12 mm [0.47 in] deep
E: 3⁄8 - 24 UNF ; 8 mm [0.39 in] deep
40
520L0346 • Rev BA • Feb 2014
P301 010
Technical Information
OML and OMM Orbital Motors
Dimensions, OMM side port, US version
Weight and dimensions
Type
Length
L max. L1 mm [in]
Weight
kg [lb]
OMM 8
104.0 [4.09]
3.5 [0.14]
1.9 [4.2]
OMM 12.5
106.0 [4.17]
5.5 [0.22]
2.0 [4.4]
OMM 20
109.0 [4.29]
8.5 [0.33]
2.1 [4.6]
OMM 32
114.0 [4.49]
13.5 [0.53]
2.2 [4.8]
OMM 50
122.0 [4.80]
21.5 [0.85]
2.4 [5.3]
520L0346 • Rev BA • Feb 2014
41
Technical Information
OML and OMM Orbital Motors
Accessories
2 bolt flange kit, code no. 151G0211
80 [3.15]
97.2 [3.827]
96.8 [3.811]
9.2 [.362]
8.8 [.246]
2.2 [.087]
1.8 [.071]
∅63 [2.48]
∅62.95 [2.478]
73.5 [2.894]
73 [2.87]
42
520L0346 • Rev BA • Feb 2014
2.2 [.087]
1.8 [.071]
5.5 [.217]
P301 013
Technical Information
OML and OMM Orbital Motors
Hydraulic systems
Installation of the Danfoss Orbital Motors
About the design
•
•
•
To ensure efficient operation all hydraulic components must be installed according to their individual
instructions.
The pump line must include a manometer connection.
To ensure designed contact and minimise the tension all mounting flanges must be flate.
Hydraulic lines must be fitted correctly to prevent air entrappment.
About the assembly
•
•
•
•
•
•
•
•
Follow the mounting instructions printed on the inside of the cardboard box.
To prevent contamination, do not dismantle the plastic plugs from the connection ports untill the
fittings are ready to be assempled.
Check that there is full face contact between the motor mounting flange and the mating part.
Do not force the motor into place when tightening the mounting screws.
Avoid unsuitable sealing material on fittings such as pack twine, teflon and others.
Use only bonded seals, O-rings, steel washers and the like.
When tightening the fittings never use a torque higher than the max. tightening torque stated in the
instructions.
Make sure that the cleanliness of the oil used is better than 20/16 (ISO 4406). Always use a filter for oil
refilling.
Starting up and running in the hydraulic system
•
•
•
•
•
Through a small-meshed filter fill up the tank with oil to the upper oil level mark.
Start the drive engine, and if possible, let it work at its lowest speed. If the motor is provided with
bleed screws, keep these open until the emerging oil is non-foaming.
Check that all components are correctly connected (pump following the right direction of rotation
etc.).
In load-sensing systems, also make sure that the signal lines are bled.
Indications of air in the hydraulic system:
‒ oam in the tank
‒ jerky movements of motor and cylinder
‒ noise
•
•
•
•
•
If so required, refill with oil.
Connect the system to a separate tank that includes a filter (fineness max. 10 µm) with twice the
capacity of the max. oil flow. Let the entire system run without load (no pressure) for about 30
minutes.
Do not load the system until it is all bled and clean.
Check the tightness of the system and make sure that its performance is satisfactory.
Change the oil filter, and if so required, refill with oil.
Operation
•
•
Do not expose the motor to pressures, pressure drops and speeds above the max. values stated in the
catalogue.
Filter the oil to ensure that the contamination level 20/16 (ISO 4406) or better.
520L0346 • Rev BA • Feb 2014
43
Technical Information
OML and OMM Orbital Motors
Hydraulic systems
Maintenance
•
•
•
•
44
When working with hydraulic systems, the main criteria of operating safety and endurance is careful
maintenance.
Always renew and replace oil, oil filters and air filters according to the instructions given by the
respective manufacturers.
Regularly check the condition of the oil.
Frequently check system tightness and oil level.
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
520L0346 • Rev BA • Feb 2014
45
Technical Information
OML and OMM Orbital Motors
46
520L0346 • Rev BA • Feb 2014
Technical Information
OML and OMM Orbital Motors
520L0346 • Rev BA • Feb 2014
47
Products we offer:
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Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and
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•
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Go to www.powersolutions.danfoss.com for further product information.
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Orbital Motors
PLUS+1® GUIDE
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www.schwarzmuellerinverter.com
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520L0346 • Rev BA • Feb 2014
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